ADIS16375 EVALUATION ON THE EVAL-ADIS

OVERVIEW

The ADIS16375 iSensor® is a complete inertial system that includes a triaxis gyroscope and triaxis accelerometer. Each sensor in the ADIS16375 combines industry-leading iMEMS® technology with signal conditioning that optimizes dynamic performance. The factory calibration characterizes each sensor for sensitivity, bias, alignment, and linear acceleration (gyro bias). As a result, each sensor has its own dynamic compensation formulas that provide accurate sensor measurements over a temperature range of −40°C to +105°C.

The ADIS16375 provides a simple, cost-effective method for integrating accurate, multiaxis, inertial sensing into industrial systems, especially when compared with the complexity and investment associated with discrete designs. All necessary motion testing and calibration are part of the production process at the factory, greatly reducing system integration time. The SPI port typically connects to a compatible port on an embedded processor, using the connection diagram below. The four SPI signals facilitate synchronous, serial data communication. Connect RST to a digital I/O line for remote reset control or leave it open for normal operation. The factory default configuration provides users with a data-ready signal on the DIO2 pin, which pulses high when new data is available in the output data registers.

ADIS16IMU1/PCBZ BREAKOUT BOARD

The ADIS16IMU1/PCBZ provides a simple method for connecting an existing processor system to the ADIS16375BMLZ. Click on one of the following link for more information on this breakout boards.

NOTE: Order (1) ADIS16375BMLZ and (1) ADIS16IMU1/PCBZ to acquire the same materials that used to come in the ADIS16375/PCBZ, which is no longer available.

EVAL-ADIS: PC EVALUATION

For those who would prefer to perform PC-based evaluation of the ADIS16375BMLZ, before developing their own embedded system, the EVAL-ADIS is the appropriate system to use. The remainder of this Wiki site will focus on PC-based evaluation with the EVAL-ADIS system. Here is a list of equipment required for this:

SYSTEM REQUIREMENTS

Windows XP, Vista, 7

.NET 3.5 Framework

PHYSICAL SETUP

The ADIS16375/PCBZ includes one interface PCB, 4 M2x.4x18mm machine screws and one ADIS16375AMLZ unit. The ADIS16375 is approximately 44 mm × 47 mm × 14 mm and provides a flexible connector interface that enables multiple mounting orientation options. Set the interface PCB aside, as it is not used for connecting the ADIS16375AMLZ to the EVAL-ADIS.

NOTE: Do not plug the EVAL-ADIS into the USB cable at this stage of the setup. Wait until the software installation is complete.

Step #1

Place the ADIS16375 device over the “F” mounting holes and align its connector with J4 on the EVAL-ADIS.

WARNING: Make sure that the connector is in proper alignment before pressing it in. Misalignment can cause pin damage and exposure to harmful conditions.

Step #2

Once the alignment with J4 is correct, gently press the top of the ADIS16375AMLZ unit down, so that its connector presses into J4. When the connector is fully seated, the ADIS16375AMLZ will rest on the EVAL-ADIS surface. The following pictures provide a reference of how this setup will look when the ADIS16375AMLZ has correct alignment with the mating connector on the EVAL-ADIS.

Step #3

Select the mounting screws. The EVAL-ADIS includes a bag of M2x0.4mm machine screws, which include 4 pieces that are in lengths of 16mm and 20mm. Using the 16mm version will only allow for 2mm of penetration into the EVAL-ADIS mouting holes, while the 20mm screws will result in the screws sticking out of the bottom side of the EVAL-ADIS, when fully-secured.

Step #4

Use a screwdriver to secure all four screws into the appropriate mouting holes. Note that difficulty in getting the screws to penetrate the pre-tapped holes can be an indicator of connector misalignment. The suggested torque setting for the attachment hardware is 40 inch-ounces, or 0.2825 N-m.

Step #5

Set the jumper JP1 on the (EVAL-ADIS) to the +3.3V position setting for the ADIS16375AMLZ. The following picture shows JP1 in the +3.3V position

USB Driver Installation

After downloading the EVAL-ADIS USB Driver file, extract the SDPDrivers.exe file from the zip file, into a convenient location and then double click on it to start the process.

When the setup wizard opens, click on Next to start the installation process

Click on Next to accept the default driver location.

The process will involve at least two progress bars that look like the following:

If you encounter this type of message during the process, click on Install to continue with the installation.

Once the installation has completed, click on Finish to complete the process.

IMU EVALUATION SOFTWARE GETTING STARTED

After the USB driver installation is complete, connect the EVAL-ADISUSB connector to the PC, using the USB Mini cable, from the EVAL-ADIS kit. LED2 (below left) will illuminate as soon as this connection is made. This indicates that the EVAL-ADIS has power and is going through its start-up/initialization process. After the EVAL-ADIS completes this process, LED1 (below right) will illuminate, indicating that it is time to launch the IMU Evaluation application. During the initialization process, several messages may appear on the screen. They are related to updating the EVAL-ADIS firmware and establishing communication between the PC and the EVAL-ADIS. Once LED1 lights up, double click on the IMU_Evaluation.exe file to launch the application.

Before Plugging Cable In

LED2 = Power OK

LED1 = USB Connection Established

Main Window

Once the IMU Evaluation software starts-up, the Main Window will appear and look like the following picture. The second picture provides color-coded boxes to support further discussion of each function in this screen.

The orange box identifies the drop-down menus, which provide a number of useful features. The Devices option provides a list of products. For evaluation of any ADIS1648x product, click on Devices and then select the part number (ADIS16488, for example). The green box shows the current device selection, which in this case, identifies the ADIS16448 as the current selection.

The Register Access option provides a listing of user-configurable registers available from the part number selected in the “Devices” drop down menu. It also provides read/write access to each one of these registers.

The Tools option provides some diagnostic tools for the USB interface.

The About option provides more detail software revision information.

The purple box identifies the output registers, which update, real-time, after pressing the Read button (see the red box for the location of the Read button).

The yellow box identifies the three waveform recorder windows. The top window contains the three gyroscope outputs. The middle window contains the three accelerometer responses. The bottom window contains the three magnetometer responses. Also, each waveform matches the color of its register (see register titles in the purple box).

Register Access

The purpose of the Register Access window is to provide both read and write access to the user registers in the ADIS1648x products. The following picture shows the appearance of this window.

The color coded boxes illustrate the different functions that this window provides.

The purple box identifies the register category. In addition to the Control/Status, this drop-down control offers access to Output and Calibration registers.

The red box identifies all of the registers that are in the current category. Click on the register name to select a register for individual read/write access.

The green box identifies the read/write control options for the current register selection. Use the hexadecimal format when writing commands to a particular register.

The Update Registers in Category button (orange box) triggers a read and display update of all registers in the current category (red box).

The yellow box identifies the area that provides single-bit command buttons, such as the ones provided by the GLOB_CMD register.

The Save Reg Settings to File command saves all of the registers in the current category into a *.csv (common-delimited) file. The Load Reg Settings from File button reads those settings back into the software package and triggers a routine that updates all registers with the values from this file.

APPLICATION TIP: The Register Access screen writes to user control registers, inside of the ADIS1648x devices, two bytes at a time. So, when configuring a register, make sure to include the hexadecimal number for all 16-bits, before pressing the Write Register button. When using an embedded processor to write to user control registers, inside of the ADIS1648x devices, each command (16-bits) writes to one byte at a time.

Data Capture

The Data Capture function supports synchronous data acquisition, based on the data-ready signal from the ADIS1648x. The following picture represents the Data Capture window, right after opening it from the Main Window and the second picture provides color-coded boxes, in order to support further discussion of each function that is associated with this screen.

The red box identifies all of the registers that are eligible for inclusion in the next acquisition process. Click on each box to include a register in the next data acquisition sequence. The box will have a check mark when it has been selected.

The green box identifies the configuration box for the name and location of the data storage file.

The yellow box identifies a number of configuration options for the data acquisition process. The Record Length is a user input for the total number of samples in a data record. Note that all selected registers will have this number of samples in the data record file, after the acquisition process completes. The Sample Rate represents the rate that the ADIS1648x updates its output register. This depends on the configuration in the DEC_RATE register. For example, if DEC_RATE = 0x0009, the decimation setting is 10, which would result in an update rate of 246 SPS. After each update to the Record Length box, the software calculates the displays the total Capture Time. The Add Header option allows the user to add or remove the header in the data storage file. The Use Scaled Data causes the software to convert the decimal, twos complement number into its representative value. For example, when enabling Use Scaled Data, the gyroscope outputs will be in units of degrees/second.

IMU EVALUATION SOFTWARE REVISION HISTORY

REVISION

RELEASE DATE

SUMMARY OF UPDATES

v1.14.3

8/5/15

Adjust ADIS16210 registers to match recent datasheet updates

v1.14.2

TBD

Internal update

v1.14.1

TBD

Internal update

v1.14.0

3/2/15

Internal update

v1.13.0

Internal update

v1.12.0

Internal update

v1.11.1

4/9/14

Updated Magnetometer recorder in the Main Menu for consistency across the ADIS16405, ADIS16407, ADIS16448 and ADIS16488

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